// Forms.less
// Base styles for various input types, form layouts, and states
// -------------------------------------------------------------


// GENERAL STYLES

// Make all forms have space below them
form {
	margin: 0 0 @baseLineHeight;
}

fieldset {
	padding: 0;
	margin: 0;
	border: 0;
}

// Groups of fields with labels on top (legends)
legend {
	display: block;
	width: 100%;
	padding: 0;
	margin-bottom: @baseLineHeight * 1.5;
	font-size: @baseFontSize * 1.5;
	line-height: @baseLineHeight * 2;
	color: @grayDark;
	border: 0;
	border-bottom: 1px solid #eee;
}

// Set font for forms
label,
input,
button,
select,
textarea {
	#font > .sans-serif(@baseFontSize,normal,@baseLineHeight);
}

// Identify controls by their labels
label {
	display: block;
	margin-bottom: 5px;
	color: @grayDark;
}

// Inputs, Textareas, Selects
input,
textarea,
select,
.uneditable-input {
	display: inline-block;
	width: 210px;
	height: @baseLineHeight;
	padding: 4px;
	margin-bottom: 9px;
	margin-right: 5px;
	font-size: @baseFontSize;
	line-height: @baseLineHeight;
	color: @gray;
	border: 1px solid #ccc;
	.border-radius(3px);
	outline: 0 !important;
}
.input-append input {margin-right:0;}
.input-prepend input {margin-left:0;}
.uneditable-textarea {
	width: auto;
	height: auto;
}

// Inputs within a label
label input,
label textarea,
label select {
	display: block;
}

// Mini reset for unique input types
input[type=image],
input[type=checkbox],
input[type=radio] {
	width: auto;
	height: auto;
	padding: 0;
	margin: 3px 0;
	*margin-top: 0; /* IE7 */
	line-height: normal;
	border: none;
	cursor: pointer;
	.border-radius(0);
}

// Reset the file input to browser defaults
input[type=file] {
	padding: initial;
	line-height: initial;
	border: initial;
	background-color: @white;
	background-color: initial;
	.box-shadow(none);
}

// Help out input buttons
input[type=button],
input[type=reset],
input[type=submit] {
	width: auto;
	height: auto;
}

// Set the height of select and file controls to match text inputs
select,
input[type=file] {
	height: 28px; /* In IE7, the height of the select element cannot be changed by height, only font-size */
	*margin-top: 4px; /* For IE7, add top margin to align select with labels */
	line-height: 28px;
}

// Chrome on Linux and Mobile Safari need background-color
select {
	width: 220px; // default input width + 10px of padding that doesn't get applied
	background-color: @white;
}

// Make multiple select elements height not fixed
select[multiple],
select[size] {
	height: auto;
}

// Remove shadow from image inputs
input[type=image] {
	.box-shadow(none);
}

// Make textarea height behave
textarea {
	height: auto;
}

// Hidden inputs
input[type=hidden] {
	display: none;
}



// CHECKBOXES & RADIOS

// Indent the labels to position radios/checkboxes as hanging
.radio,
.checkbox {
	padding-left: 18px;
}
.radio input[type=radio],
.checkbox input[type=checkbox] {
	float: left;
	margin-left: -18px;
}

// Move the options list down to align with labels
.controls > .radio:first-child,
.controls > .checkbox:first-child {
	padding-top: 5px; // has to be padding because margin collaspes
}

// Radios and checkboxes on same line
.radio.inline,
.checkbox.inline {
	display: inline-block;
	margin-bottom: 0;
}
.radio.inline + .radio.inline,
.checkbox.inline + .checkbox.inline {
	margin-left: 10px; // space out consecutive inline controls
}



// FOCUS STATE
input,
textarea {
	.box-shadow(inset 0 1px 1px rgba(0,0,0,.075));
	@transition: border linear .2s, box-shadow linear .2s;
	.transition(@transition);
}
input:focus,
textarea:focus {
	border-color: rgba(82,168,236,.8);
	@shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(82,168,236,.6);
	.box-shadow(@shadow);
	outline: thin dotted \9; /* IE6-8 */
}
input[type=file]:focus,
input[type=checkbox]:focus,
select:focus {
	.box-shadow(none); // override for file inputs
	.tab-focus();
}



// INPUT SIZES
// -----------

// General classes for quick sizes
.input-mini       { width: 60px; }
.input-small      { width: 90px; }
.input-medium     { width: 150px; }
.input-large      { width: 210px; }
.input-xlarge     { width: 270px; }
.input-xxlarge    { width: 530px; }

// Grid style input sizes
input[class*="span"],
select[class*="span"],
textarea[class*="span"],
.uneditable-input {
	float: none;
	margin-left: 0;
}

// This is a duplication of the main grid .columns() mixin, but subtracts 10px to account for input padding and border
.inputColumns(@columnSpan: 1) {
	width: ((@gridColumnWidth) * @columnSpan) + (@gridGutterWidth * (@columnSpan - 1)) - 10;
}
input,
textarea,
.uneditable-input {
	// Default columns
	&.span1     { .inputColumns(1); }
	&.span2     { .inputColumns(2); }
	&.span3     { .inputColumns(3); }
	&.span4     { .inputColumns(4); }
	&.span5     { .inputColumns(5); }
	&.span6     { .inputColumns(6); }
	&.span7     { .inputColumns(7); }
	&.span8     { .inputColumns(8); }
	&.span9     { .inputColumns(9); }
	&.span10    { .inputColumns(10); }
	&.span11    { .inputColumns(11); }
	&.span12    { .inputColumns(12); }
}

.selectColumns(@columnSpan: 1) {
	width: ((@gridColumnWidth) * @columnSpan) + (@gridGutterWidth * (@columnSpan - 1)) + 10;
}
select {
	&.span1     { .selectColumns(1); }
	&.span2     { .selectColumns(2); }
	&.span3     { .selectColumns(3); }
	&.span4     { .selectColumns(4); }
	&.span5     { .selectColumns(5); }
	&.span6     { .selectColumns(6); }
	&.span7     { .selectColumns(7); }
	&.span8     { .selectColumns(8); }
	&.span9     { .selectColumns(9); }
	&.span10    { .selectColumns(10); }
	&.span11    { .selectColumns(11); }
	&.span12    { .selectColumns(12); }
}



// DISABLED STATE
// --------------

// Disabled and read-only inputs
input[disabled],
select[disabled],
textarea[disabled],
input[readonly],
select[readonly],
textarea[readonly] {
	background-color: #f5f5f5;
	border-color: #ddd;
	cursor: not-allowed;
	color: #999;
}




// FORM FIELD FEEDBACK STATES
// --------------------------

// Mixin for form field states
.formFieldState(@textColor: #555, @borderColor: #ccc, @backgroundColor: #f5f5f5) {
	// Set the text color
	> label,
	.help-block,
	.help-inline {
		color: @textColor;
	}
	// Style inputs accordingly
	input,
	select,
	textarea {
		color: @textColor;
		border-color: @borderColor;
		&:focus {
			border-color: darken(@borderColor, 10%);
			.box-shadow(0 0 6px lighten(@borderColor, 20%));
		}
	}
	// Give a small background color for input-prepend/-append
	.input-prepend .add-on,
	.input-append .add-on {
		color: @textColor;
		background-color: @backgroundColor;
		border-color: @textColor;
	}
}
// Warning
.control-group.warning {
	.formFieldState(@warningText, @warningText, @warningBackground);
}
// Error
.control-group.error {
	.formFieldState(@errorText, @errorText, @errorBackground);
}
// Success
.control-group.success {
	.formFieldState(@successText, @successText, @successBackground);
}

// HTML5 invalid states
// Shares styles with the .control-group.error above
input:focus:required:invalid,
textarea:focus:required:invalid,
select:focus:required:invalid {
	color: #b94a48;
	border-color: #ee5f5b;
	&:focus {
		border-color: darken(#ee5f5b, 10%);
		.box-shadow(0 0 6px lighten(#ee5f5b, 20%));
	}
}



// FORM ACTIONS
// ------------

.form-actions {
	padding: (@baseLineHeight - 1) 20px @baseLineHeight;
	margin-top: @baseLineHeight;
	margin-bottom: @baseLineHeight;
	background-color: #f5f5f5;
	border-top: 1px solid #ddd;
}

// For text that needs to appear as an input but should not be an input
.uneditable-input {
	display: block;
	background-color: @white;
	border-color: #eee;
	.box-shadow(inset 0 1px 2px rgba(0,0,0,.025));
	cursor: not-allowed;
}

// Placeholder text gets special styles; can't be bundled together though for some reason
.placeholder(@grayLight);



// HELP TEXT
// ---------

.help-block {
	margin-top: 5px;
	margin-bottom: 0;
	color: @grayLight;
}

.help-inline {
	display: inline-block;
	.ie7-inline-block();
	margin-bottom: 9px;
	vertical-align: middle;
	padding-left: 5px;
}



// INPUT GROUPS
// ------------

// Allow us to put symbols and text within the input field for a cleaner look
.input-prepend,
.input-append {
	margin-bottom: 5px;
	//.clearfix(); // Clear the float to prevent wrapping
	input,
	.uneditable-input {
		.border-radius(0 3px 3px 0);
	}
	.uneditable-input {
		border-left-color: #ccc;
	}
	.add-on {
		float: left;
		display: inline-block;
		width: auto;
		min-width: 16px;
		height: @baseLineHeight;
		margin-right: -1px;
		padding: 4px 4px 4px 5px;
		font-weight: normal;
		line-height: @baseLineHeight;
		color: @grayLight;
		text-align: center;
		text-shadow: 0 1px 0 @white;
		background-color: #f5f5f5;
		border: 1px solid #ccc;
		.border-radius(3px 0 0 3px);
	}
	.active {
		background-color: lighten(@green, 30);
		border-color: @green;
	}
}
.input-prepend {
	.add-on {
		*margin-top: 1px; /* IE6-7 */
	}
}
.input-append {
	input,
	.uneditable-input {
		.border-radius(3px 0 0 3px);
	}
	.uneditable-input {
		border-right-color: #ccc;
		float: left;
	}
	.add-on {
		margin-right: 0;
		margin-left: -4px;
		float: none;
		.border-radius(0 3px 3px 0);
	}
	input:first-child {
		// In IE7, having a hasLayout container (from clearfix's zoom:1) can make the first input
		// inherit the sum of its ancestors' margins.
		*margin-left: -160px;

		&+.add-on {
			*margin-left: -21px;
		}
	}
}



// SEARCH FORM
// -----------

.search-query {
	padding-left: 14px;
	padding-right: 14px;
	margin-bottom: 0; // remove the default margin on all inputs
	.border-radius(14px);
}



// HORIZONTAL & VERTICAL FORMS
// ---------------------------

// Common properties
// -----------------

.form-search,
.form-inline,
.form-horizontal {
	input,
	textarea,
	select,
	.help-inline,
	.uneditable-input {
		display: inline-block;
		margin-bottom: 0;
	}
}
.form-search label,
.form-inline label {
	display: inline-block;
}

// Margin to space out fieldsets
.control-group {
	margin-bottom: @baseLineHeight / 2;
}

// Horizontal-specific styles
// --------------------------

.form-horizontal {
	// Legend collapses margin, so we're relegated to padding
	legend + .control-group {
		margin-top: @baseLineHeight;
		-webkit-margin-top-collapse: separate;
	}
	// Increase spacing between groups
	.control-group {
		margin-bottom: @baseLineHeight;
	}
	// Float the labels left
	.control-group > label {
		float: left;
		width: 140px;
		padding-top: 5px;
		text-align: right;
	}
	// Move over all input controls and content
	.controls {
		margin-left: 160px;
	}
	// Move over buttons in .form-actions to align with .controls
	.form-actions {
		padding-left: 160px;
	}
}
